Distinguishing Characteristics |
Bivalve (2 shells); shell fan-shaped, somewhat triangular, posterior end more acute (angulate), anterior end more rounded; color yellowish-white, sometimes with red or brown lines on ribs; thick radial ribs that become broader near the ventral edge, giving the margins a zigzag shape; interior muscle scar is colorless and positioned nearer the flared (posterior) end. |
Similar Species |
Can be distinguished from other fluted shells by the size (1 in. or less), its triangular shape where the posterior end flares out, and the muscle scar which is colorless and situated on the flared end. |
Habitat |
Gulf, attaches to hard substrates |
Maximum Size |
2.5 cm (1 in) |
Other Common Names |
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Previous Scientific Names |
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